50、 Credit cards symbolize American shopping habits: “Buy now, pay later.” 信用卡反映美国人的购物习惯：“现在买, 以后付。”
51、 In general, the act is designed to keep the U.S. high-tech industry on top by filling the need for skilled technology workers. 总之，这个法案是为了填补美国对熟练技术工人的需求，以保持美国在高科技工业中的领先地位而制定的。
52、 Tom’s college education gave him an advantage over boys who had not been to a university. 汤姆的大学教育使他比没上过大学的男孩们占优势。
53、 Educators also claim that calculators are so inexpensive and commonplace that students must become competent in using them. 教育家们还声称, 计算器如此便宜而又普遍, 学生必须学会熟练使用。
54、 He already has five honorary doctorates-the latest bestowed upon him by Yale University late of May, 2002-but what he really wanted was this humble bachelor’s degree. 斯皮尔伯格已获得5个荣誉博士头衔，其中最近的一个是在2002年5月下旬由耶鲁大学授予的，然而他最想得到的却是这个不起眼的学士学位。
55、 Calculators do have their place in the world outside school and, to a limited extent, in higher-level math classes, but they are hardly education tools. 计算器在学校之外的社会中的确有其地位, 在高等数学课堂上也有一定的作用, 但它们很难算得上是教育工具。
56、 Very heavy objects or bulky materials like coal, cement, mineral ore, and the like, are weighed in tons. 非常重的物体或者像煤、水泥、矿石等堆积如山的原材料用吨计重。
57、 By the end of this century, about 5,000 modern windmills will be in operation, generating about 20% of the electricity of the country. 到本世纪末, 将有5000架现代化的风车投入运行, 生产约全国20%的电力。
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